Pitch of an audio signal representing a musical note, measured in units of octave and relative to a pitch standard such as A440, is the base-2 logarithm of the frequency ratio of the fundamental frequency of the note to the frequency of the pitch standard.
Questions tagged [pitch]
189 questions
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Finding the pitch value of a note
I am trying to implement a karaoke scoring algorithm and, for a particular song, have the note information (done by a professional) that indicates what note occurs in which part of the lyric.
When I use a pitch detector and plot the pitch values…
Sriram
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Software implementation of pitch correction
I have a question about the physics of pitch correction of sound.
My background is physics, I'm mostly active on physics.stackexchange. (Check out my profile.)
The background of my question:
Before computerized recording there was only analog…
Cleonis
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Implementation of CUSUM to segment stable parts in a pitch contour
I've got the pitch contour of a person singing several different frequencies after each other (octave errors cleaned up). I'd like to segment the stable parts from the transitionary ones (gliding up down). Below is an example of the my data.
After…
Stijn Frishert
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Binary classifier for a small range of the audio spectrum
I am trying to detect a pitch in a narrow range of the audio spectrum with minimal samples. This corresponds to the rattling of certain mechanical systems. For example, the hum of an engine.
To do this, I am hoping to identify if there is a…
Mikhail
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Is pitch detection precision dynamic across pitch range?
Please verify my understanding that pitch detection precision is dynamic across a pitch range, whereas relatively higher pitches can be measured to increasingly higher precision, and vice versa. Based on this, I would like to conclude that pitch…
bazz
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Change pitch of a wav file without changing the Sample rate?
I'm creating a Python library I call PAL, (Python Audio Library) and I need some help. What ways are there to change the pitch of a wav file without changing the sampling rate? I have complete access to the data contained in said file as numbers so…
CoderBoy
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What's a simple way to shift the pitch?
Basically I want to perform an FFT to find the frequencies of the sound, then stretch the frequencies (for example a stretch by 2 means copy the value of the fourier coefficient X(n) to X(n/2) then use an inverse FFT. Will this work ?
user7439
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The Zero-Crossing rate threshold for a voiced/unvoiced decision
I've implemented a function that calculates the zero-crossing rate for a given signal. I've used this same function to calculate the pitch. To differentiate voiced signals from unvoiced with reference to ZCR: A high ZCR means that the signal is…
Anass Naqqad
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Pitch Detection in the Browser
Does anybody know a good library that does pitch detection in the browser? Anything in Javascript or Webassembly would suffice. My target is mainly singing voices. I already tried pitchfinder, but for me it reports frequencies that are a half tone…
Teresa Siegmantel
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Calculation of the salience function (Klapuri 2006)
I am reading this paper here and I wanted to check my understanding regarding the salience function:
$$
\hat{s}(\tau)=\sum_{m=1}^M g(\tau, m) \max_{k\in \kappa_{\tau, m}}\lvert Y(k)\rvert
$$
Where the set $\kappa_{\tau, m}$ defines a range of…
pavlos163
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Pitch salience definition/references
What is the pitch salience? I see it a lot when looking for papers about multiple pitch detection but haven't found a proper definition of it.
pavlos163
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Why do musical instruments have different colour in phone?
When I hear a musical instrument in phone, the color of it sounds a bit different than its original 'live' sound. Why?
sitems
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